Keg River Oil and Gas, Assessment Unit 52430102 · 0 to

Keg River Oil and Gas, Assessment Unit 52430102

0

50

100

150

200

250

300

1920 1930 1940 1950 1960 1970 1980 1990 2000

DRILLING-COMPLETION YEAR

CU

M. N

EW

-FIE

LD

WIL

DC

AT

WE

LL

S (

No

.)


0

5

10

15

20

25

30

35

1921

1924

1927

1930

1933

1936

1939

1942

1945

1948

1951

1954

1957

1960

1963

1966

1969

1972

1975

1978

1981

1984

1987

1990

1993

DRILLING-COMPLETION YEAR

NE

W-F

IEL

D W

ILD

CA

T W

EL

LS

(N

o.)


0

1

10

100

1,000

0 10 20 30 40 50 60 70

OIL-POOL RANK BY SIZE

KN

OW

N O

IL-P

OO

L S

IZE

(M

MB

O)

First third of pools discovered

Second third of pools discovered

Third third of pools discovered

Keg River-Keg River Oil, Assessment Unit 52430102

0

20

40

60

80

100

120

0.5

to <

11

to <

22

to <

44

to <

88

to <

1616

to <

3232

to <

6464

to <

128

128

to <

256

256

to <

512

512

to <

1,02

4

1,02

4 to

<2,

048

2,04

8 to

<4,

096

4,09

6 to

<8,

192

8,19

2 to

<16

,384

16,3

84 to

<32

,768

32,7

68 to

<65

,536

65,5

36 to

<13

1,07

2

131,

072

to <

262,

144

>=26

2,14

4KNOWN OIL-POOL SIZE (MMBO)

NU

MB

ER

OF

PO

OL

S

Third third ofpoolsdiscovered

Second thirdof poolsdiscovered

First third ofpoolsdiscovered


0

50

100

150

200

250

0.5

to <

1

1 to

<2

2 to

<4

4 to

<8

8 to

<16

16 to

<32

32 to

<64

64 to

<12

8

128

to <

256

256

to <

512

512

to <

1,02

4

1,02

4 to

<2,

048

2,04

8 to

<4,

096

4,09

6 to

<8,

192

8,19

2 to

<16

,384

16,3

84 to

<32

,768

32,7

68 to

<65

,536

65,5

36 to

<13

1,07

2

131,

072

to <

262,

144

>=26

2,14

4

KNOWN OIL-POOL SIZE (MMBO)

VO

LU

ME

OF

OIL

(M

MB

O)


0

1

10

100

1,000

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

KN

OW

N O

IL-P

OO

L S

IZE

(M

MB

O)


0

1

10

100

1,000

0 50 100 150 200 250 300

CUM. NEW-FIELD WILDCAT WELLS (No.)

KN

OW

N O

IL-P

OO

L S

IZE

(M

MB

O)


0

100

200

300

400

500

600

700

800

900

1,000

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

CU

M. K

NO

WN

OIL

VO

LU

ME

(M

MB

O)


0

100

200

300

400

500

600

700

800

900

1,000

0 50 100 150 200 250 300


CU

M. K

NO

WN

OIL

VO

LU

ME

(M

MB

O)


0

50

100

150

200

250

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

CU

M. O

IL P

OO

LS

(N

o.)


0

50

100

150

200

250

0 50 100 150 200 250 300


CU

M. O

IL P

OO

LS

(N

o.)


0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

OIL

-PO

OL

DE

PT

H (

m)


0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

0 50 100 150 200 250 300


OIL

-PO

OL

DE

PT

H (

m)


0

20

40

60

80

100

120

140

0 to <10 10 to<20

20 to<30

30 to<40

40 to<50

50 to<60

60 to<70

70 to<80

80 to<90

90 to<100

>=100

API GRAVITY (DEGREES)

OIL

PO

OL

S (

No

.)


1

10

100

1,000

0 5 10 15 20

GAS-POOL RANK BY SIZE

KN

OW

N G

AS

-PO

OL

SIZ

E (

BC

FG

)

First third of pools discovered

Second third of pools discovered

Third third of pools discovered


0

5

10

15

20

25

30

35

3 to

<6

6 to

<12

12 to

<24

24 to

<48

48 to

<96

96 to

<19

2

192

to <

384

384

to <

768

768

to <

1,53

6

1,53

6 to

<3,

072

3,07

2 to

<6,

144

6,14

4 to

<12

,288

12,2

88 to

<24

,576

24,5

76 to

<49

,152

49,1

52 to

<98

,304

98,3

04 to

<19

6,60

8

196,

608

to <

393,

216

393,

216

to <

786,

432

786,

432

to <

1,57

2,86

4

>=1,

572,

864

KNOWN GAS-POOL SIZE (BCFG)

GA

S P

OO

LS

(N

o.)

Third third ofpoolsdiscovered

Second thirdof poolsdiscovered

First third ofpoolsdiscovered


0

100

200

300

400

500

600

700

800

3 to

<6

6 to

<12

12 to

<24

24 to

<48

48 to

<96

96 to

<19

2

192

to <

384

384

to <

768

768

to <

1,53

6

1,53

6 to

<3,

072

3,07

2 to

<6,

144

6,14

4 to

<12

,288

12,2

88 to

<24

,576

24,5

76 to

<49

,152

49,1

52 to

<98

,304

98,3

04 to

<19

6,60

8

196,

608

to <

393,

216

393,

216

to <

786,

432

786,

432

to <

1,57

2,86

4

>=1,

572,

864

KNOWN GAS-POOL SIZE (BCFG)

VO

LU

ME

OF

GA

S (

BC

FG

)


1

10

100

1,000

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

KN

OW

N G

AS

-PO

OL

SIZ

E (

BC

FG

)


1

10

100

1,000

0 50 100 150 200 250 300


KN

OW

N G

AS

-PO

OL

SIZ

E (

BC

FG

)


0

200

400

600

800

1,000

1,200

1,400

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

CU

M. K

NO

WN

GA

S V

OL

UM

E (

BC

FG

)


0

200

400

600

800

1,000

1,200

1,400

0 50 100 150 200 250 300


CU

M. K

NO

WN

GA

S V

OL

UM

E (

BC

FG

)


0

10

20

30

40

50

60

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

CU

M. G

AS

PO

OL

S (

No

.)


0

10

20

30

40

50

60

0 50 100 150 200 250 300


CU

M. G

AS

PO

OL

S (

No

.)


0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

1920 1930 1940 1950 1960 1970 1980 1990 2000

POOL-DISCOVERY YEAR

GA

S-P

OO

L D

EP

TH

(m

)


0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

0 50 100 150 200 250 300


GA

S-P

OO

L D

EP

TH

(m

)


0

20

40

60

80

100

120

140

0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000

POOL DEPTH (m)

LIQ

UID

S/G

AS

, GA

S P

OO

LS

(B

L/M

MC

FG

)

Keg River Oil and Gas, Assessment Unit 52430102Volumes of Discovered Petroleum

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. MMBNGL, million barrels of natural gas liquids. Pools containing less than 0.5 MMBO inoil pools or 3 BCFG in gas pools were not considered in the assessment. Pools were classified as oil or gas by the USGS. Pools without reported

discovery dates were not included. NA means not applicable and is shown for volumes where only one pool is present and for grown volumes. Growthfunctions were not applied to pool sizes. Calculated values may not be equal to the sums of the component values because numbers have been

independently rounded.]

Known (Discovered) Volumes Grown (Discovered) VolumesPool Type Number Number

of Pools Oil (MMBO) Gas (BCFG) NGL (MMBNGL) of Pools Oil (MMBO) Gas (BCFG) NGL (MMBNGL)

Oil Pools 198 914 0 40 NA NA NA NAGas Pools 56 0 1,219 53 NA NA NA NA

Pools <0.5 MMBOE 459 97 42 7 NA NA NA NA

All Pools 713 1,011 1,262 100 NA NA NA NA

Page 1

Keg River Oil and Gas, Assessment Unit 52430102Discovery-History Sequence

[MMBO, million barrels of oil. BCFG, billion cubic feet of gas. Fields containing less than 0.5 MMBO in oil pools or 3 BCFG in gas poolswere not considered in the assessment. Pools were classified as oil or gas by the USGS. The first half or third shows year of first pool

discovery as well as end of period. NA means not applicable and is shown where fewer than four fields are present. Growth functions werenot applied to pool sizes and no tables showing the discovery-history sequence for grown volumes were made.]

Discovery-History Sequence - Known (Discovered) VolumesPoolType Year Number of Total Mean Median

(End of Period) Pools Volume Size Size

Oil Pools Known Sizes (MMBO)First third 1965-1968 66 648 10 2Second third 1970 66 77 1 1Third third 1993 66 189 3 1

All Oil Pools 198 914 5 1Gas Pools Known Sizes (BCFG)

First third 1954-1969 19 140 7 6Second third 1983 19 544 29 5Third third 1994 18 536 30 8

All Gas Pools 56 1,219 22 6

Page 2

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Keg River Oil and Gas, Assessment Unit 52430102 · 0 to